Download Resident Evil 4 Pc Mouse Support -

Navigate to your RE4 installation folder (Usually C:\Program Files (x86)\Steam\steamapps\common\Resident Evil 4\Bin32). Copy bio4.exe to your desktop as a backup.

Launch the game. You will see a new overlay or config file (re4_tweaks.toml). Open that file with Notepad. Look for: Download Resident Evil 4 Pc Mouse Support

[Mouse]
raw_input = true
mouse_sensitivity = 0.5

Set raw_input = true. Set sensitivity to your preference (0.3 to 0.7 is a good range). Save and close. Navigate to your RE4 installation folder (Usually C:\Program

This document explains how mouse input works in Resident Evil 4 (RE4) on PC, common issues, configuration options, community fixes/mods, and practical tips to get smooth, responsive aiming and camera control. Assumptions: you have RE4 installed on Windows PC (Steam, Epic, or other digital copy). If you need platform-specific steps (e.g., Xbox Cloud PC or Steam Deck) say so. Set raw_input = true

Depending on your RE4 release (original 2007 PC, 2014/2023 remakes, or later ports), native mouse options vary:

Check the in-game Settings → Controls / Mouse section for:

If your version lacks raw input or smoothing toggle, use system or community fixes described below.